Preparation method of water-based UV curing resin

A curing resin, water-based technology, used in coatings, polyurea/polyurethane coatings, etc., can solve the problem of little application research, and achieve the effects of good stability, fast curing speed and high flexibility

Pending Publication Date: 2022-02-01
山东尚正新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the improvement of people's awareness of environmental protection, water-based UV curing system has received more and more attention in recent years, but there are few researches on its application.

Method used

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  • Preparation method of water-based UV curing resin
  • Preparation method of water-based UV curing resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of the water-based UV curable resin described in the present embodiment 1 is made up of the following steps:

[0044] (1) Introducing hydroxyl groups into ricinoleic acid to produce castor oil-based polyols

[0045] Add 300 g of ricinoleic acid and 105 g of 1,3,5-pentanetriol into a 3000 mL reaction device equipped with a constant pressure dropping funnel, reflux condenser, thermometer and electric stirrer, raise the temperature to 50°C, and react for 1.5 hours. After the esterification reaction is completed, castor oil-based polyols are obtained.

[0046] (2) Introducing hydrophilic groups into castor oil-based polyols

[0047] Add 180 g of trimellitic anhydride into the castor oil-based polyol reaction device, keep the temperature at 65° C. for 2 hours, and then lower the temperature to 40° C.

[0048] (3) Preparation of oligomers

[0049]The product prepared in step (2) was heated up to 100°C, dehydrated under reduced pressure for 0.5 hours,...

Embodiment 2

[0053] The preparation method of the water-based UV curable resin described in the present embodiment 2 is made up of the following steps:

[0054] (1) Introducing hydroxyl groups into ricinoleic acid to produce castor oil-based polyols

[0055] Add 300 g of ricinoleic acid and 120 g of 1,3,5-pentanetriol into a 3000 mL reaction device equipped with a constant pressure dropping funnel, reflux condenser, thermometer and electric stirrer, raise the temperature to 55°C, and react for 1.8 hours. After the esterification reaction is completed, castor oil-based polyols are obtained.

[0056] (2) Introducing hydrophilic groups into castor oil-based polyols

[0057] Add 200 g of trimellitic anhydride into the castor oil-based polyol reaction device, keep it at 70° C. for 2.5 hours, and then lower the temperature to 43° C.

[0058] (3) Preparation of oligomers

[0059] Warm up the product prepared in step (2) to 105°C, dehydrate under reduced pressure for 0.5 hours, then cool down t...

Embodiment 3

[0063] The preparation method of the water-based UV curable resin described in the present embodiment 3 is made up of the following steps:

[0064] (1) Introducing hydroxyl groups into ricinoleic acid to produce castor oil-based polyols

[0065] Add 300 g of ricinoleic acid and 135 g of 1,3,5-pentanetriol into a 3000 mL reaction device equipped with a constant pressure dropping funnel, reflux condenser, thermometer and electric stirrer, raise the temperature to 60°C, and react for 2 hours. After the esterification reaction is completed, castor oil-based polyols are obtained.

[0066] (2) Introducing hydrophilic groups into castor oil-based polyols

[0067] Add 210 g of trimellitic anhydride to the castor oil-based polyol reaction device, keep the temperature at 75° C. for 3 hours, and then lower the temperature to 45° C.

[0068] (3) Preparation of oligomers

[0069] The product prepared in step (2) was heated up to 105°C, dehydrated under reduced pressure for 0.5 hours, th...

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Abstract

The invention belongs to the technical field of organic polymer synthesis, and particularly relates to a preparation method of water-based UV curing resin. The preparation method comprises the following steps: carrying out a ring-opening reaction on ricinoleic acid and trimellitic anhydride, adding IPDI and a catalyst, carrying out a reaction to produce an oligomer, carrying out a reaction on the oligomer and hydroxyethyl methylacrylate in an environment of a polymerization inhibitor, adding N-methyldiethanolamine into the product, carrying out neutralization, adding water, carrying out emulsification, and evaporating a solvent to obtain a water-based resin finished product. According to the preparation method of the water-based UV curing resin, the renewable resource vegetable oil ricinoleic acid is used as a raw material, and the green chemical principle is met; the ricinoleic acid is subjected to esterification reaction, polyhydric alcohol synthesis and trimellitic anhydride react with the polyhydric alcohol, two carboxyl groups are introduced into the polyhydric alcohol, a foundation is laid for preparing high-solid-content water-based UV resin, and the yellowing resistance of a product is improved by using IPDI with relatively good yellowing resistance as a raw material.

Description

technical field [0001] The invention belongs to the technical field of organic polymer synthesis, and in particular relates to a preparation method of water-based UV curable resin. Background technique [0002] In the late 1960s, ultraviolet (UV) curing technology, as a new green technology, was developed and applied to the coating resin industry. UV resin is the most important component of the photocuring system. It is an oligomer that can undergo physical and chemical changes in a short period of time after being irradiated by ultraviolet light, and can be quickly cross-linked and cured. Mainly used in UV coatings and UV inks. The basic performance of UV curable coating film depends largely on its main film-forming substance UV resin. [0003] Traditional oil-based UV resins have large molecular weight and high viscosity, which have deficiencies in coating process and film performance control. Moreover, most reactive diluents are toxic and irritating to human skin, muco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/36C09D175/14
CPCC08G18/672C08G18/36C09D175/14
Inventor 柴可军荆晓东王帅
Owner 山东尚正新材料科技股份有限公司
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